Use of DC Plasma Treated Air Pollution Control (APC) Residue Glass as Pozzolanic Additive in Portland Cement
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Air pollution control (APC) residues are hazardous waste generated from the air pollution abatement systems operating at energy from waste plants processing municipal solid waste. APC residues can be blended with glass forming additives and treated by direct current (DC) plasma technology, producing a stable, non-hazardous inert glass slag. This research has characterised the pozzolanic activity of this glass slag. The effects of glass cooling rate (quenched or air cooled) and particle size distribution have been investigated. The results show that quenched or fritted APC glass is significantly more pozzolanic than air-cooled glass. The optimum blended Portland cement paste, which maximises APC glass utilization and has the best properties, contained 20 wt % fritted APC glass slag. This blended Portland cement paste had low water demand, developed a dense microstructure and had high compressive strength (~100 MPa). The research has demonstrated that the glass slag resulting from DC plasma treatment of APC residues is pozzolanic and has potential to be beneficially reused in blended cements.
KeywordsAPC residues Pozzolanic materials DC plasma treatment Energy from waste
This work was completed as part of the project ‘Integrated solution for air pollution control residues (APC) using DC plasma technology’ funded by the UK Technology Strategy Board and Defra, through the Business Resource Efficiency and Waste (BREW) programme.
- 2.Amutha Rani, D., Roether, J.A., Gomez, E., Deegan, D., Cheeseman, C.R., Boccaccini, A.R.: Glass-ceramics from plasma treated air pollution control (APC) residues. Glass Technol. Eur. J. Glass Sci. Technol. A 50(1), 57–61 (2009)Google Scholar
- 5.BSI: Cement—Part 1: composition, specifications and conformity criteria for common cements BS EN 197–1:2000. British Standards Institution, London (2000)Google Scholar
- 6.Hewlett, P.C.: Lea’s Chemistry of Cement and Concrete, 4th edn. Arnold, London (1998)Google Scholar
- 7.Malhotra, V.M., Mehta, K.P.: Pozzolanic and Cementitious Materials, vol. 1. Advances in concrete technology. Taylor & Francis, Abington (1996)Google Scholar
- 18.BSI: Methods of Testing Cement. Pozzolanicity Test for Pozzolanic Cements BS EN 196–5:2005. British Standards Online, London (2005)Google Scholar
- 19.CA, P.: Portland Cement, Concrete and Heat of Hydration. Concrete Technology Today, London (1997)Google Scholar
- 22.Chandra, S.: Waste Materials Used in Concrete Manufacturing. Noyes Publications, Westwood (1997)Google Scholar
- 29.Roy, D.M., Idorn, G.M.: Hydration structure and properties of blast furnace slag cements. In: ACI Technical Paper, pp. 444–457 (1982)Google Scholar
- 30.Bensted, J., Barnes, P. (eds.): Structure and Performance of Cements, 2nd edn. Spoon Press, London (2002)Google Scholar
- 33.ACI: Manual of Concrete Practice, Part 2. American Concrete Institute, Detroit (2002)Google Scholar